Ok, so i am changing injectors, i just changed out the ones that i knew were bad, bled the lines, started it, and it is knocking VERY BAD now. It is much worse than before. Only now it sounds like it is coming from the oil pan, like it is a rod knock that was masked by the bad injectors. I am trying to change them all but it is now raining and i dont have a garage. Any input on why it would be knocking so much worse now?